1. WG4 Experimental summary
Emi
Kou (LPT, Orsay)
Marco
Ciuchini (INFN)
Timothy John
Gershon (Warwick)
Hirokazu
Ishino (TITech)
WG4 experiment summary

2. Many talks from experiments!
a, f2
A. Bevan, A. Somov, C.C. Wang, G. Cavoto, F. Palombo
beff, f1eff
J. Smith, K. Hara, Y. Chao, E. Di Marco, J. Libby
g, f3
E. Barrachini, P. Krokovny, G. Punzi, J. Nardulli
Other Mode
J. Biesiada, K.F. Chen, G. Vasseur, G. Hou
WG4 experiment summary

3. 1000/fb !! KEKB for Belle PEP-II for BaBar As of July 24, 2006
KEKB + PEP-II
KEKB
for Belle
PEP-II
for BaBar
WG4 experiment summary

4. WG4 summary of experiments

5. Isopin triangle
WG4 experiment summary

6. B→pp Adrian Bevan Mixing CPV established by both experiments
Direct CPV: 5.5s by Belle, no DCPV by BaBar, need more data!
HFAG2006
BaBar has increased p0 efficiency:
WG4 experiment summary

7. B→rr Alexandre Somov [BaBar hep-ex/0612021] submitted to PRL HFAG2006
WG4 experiment summary

8. Gianluca Cavoto (BaBar)
Chin-Chi Wang (Belle)
Gianluca Cavoto (BaBar)
B→rp
time-dependent Dalitz plot analysis involves cos(2f2)
27 parameter fit: one of the most complicate analyses!
WG4 experiment summary

9. Gianluca Cavoto (BaBar)
Chin-Chi Wang (Belle)
Gianluca Cavoto (BaBar)
B→rp
WG4 experiment summary

10. Gianluca Cavoto (BaBar)
Chin-Chi Wang (Belle)
Gianluca Cavoto (BaBar)
B→rp
Dalitz+isospin
Evidence of Direct CPV!
WG4 experiment summary

11. f2 constraints
degrees
WG4 experiment summary

12. first tCPV measurements
B→a1p
Fernando Palombo
first tCPV measurements
additional constraints on a (f2) in near future!
WG4 experiment summary

13. WG4 experiment summary

14. B→h'K0 and SU(3)
Jim Smith
WG4 experiment summary

15. b→s Ks vertexing
Yuan Chao
WG4 experiment summary

16. b→s quasi-two-body decays
Kohji Hara
B0r0KS
B0fK0
B0wKS
B0f0KS
WG4 experiment summary

17. B0→KKK0 Dalitz tCPV
Emmanuele Di Marco
WG4 experiment summary

18. B0→KKK0 Dalitz tCPV
Emmanuele Di Marco
WG4 experiment summary

19. Chua, talk at FPCP06, hep-ph/0605301
b→s tCPV measurements
Chua, talk at FPCP06, hep-ph/
WG4 experiment summary

20. Sensitivity studies with maximum likelihood fit to toy MC
Jim Libby
Assume a single new physics CP violating phase NP such that:
Sensitivity studies with maximum likelihood fit to toy MC
Large CP asymmetry unambiguous signature of New Physics
input
2 fb-1 sensitivity to NP is 0.10
WG4 experiment summary

21. WG4 experiment summary

22. Elisabetta Barrachini
B→Kp
Elisabetta Barrachini
WG4 experiment summary

23. B→Khh
Pavel Krokovny
B+ -> K+pi+pi- Belle PRD (2005) hep-ex/
B+ -> K+pi+pi- BaBar PRD (2005) hep-ex/
B0 -> K+pi-pi0 BaBar hep-ex/
B0 -> K+pi-pi0 Belle PRB (2004) hep-ex/
B0 -> Kspi+pi- Belle hep-ex/
WG4 experiment summary

24. B→hh' @ Tevatron Giovanni Punzi
Many results comparable with the B-factories, and interesting results on Bs!
WG4 experiment summary

25. Fit results corresponding to L=2fb-1 (secondary fake solution appears)
LHCb
Jacopo Nardulli
CP sensitivities are then estimated with an extended unbinned maximum likelihood fit to the toy MC sample
Fit results corresponding to L=2fb-1
Bd+-
BsK+K-
(C)
0.043 (0.07*)
0.042
(S)
0.037 (0.09*)
0.044
BdK+-
Bs+K-
(ACP)
0.003 (0.015*)
0.02
(for L=2fb-1)
Extraction of  performed using UTfit bayesian approach and software tools in 3 different scenarios (in this exercise =65o is assumed)
(1) Perfect U-spin symmetry
d=d’ -  = ’
(2) Weaker assumption: perfect U-spin symmetry just for d, d’
d=d’ - no constraint on , ’
(3) Even weaker: given U-spin breaking for d, d’
d’/d =[0.8, 1.2] no constraint on , ’
Perfect U-spin : Sensitivity ~ 4o
Scenario (2) & (3) : Sensitivity ~ 7°-10°
(secondary fake solution appears)
*From current world average
But sensitivity depends on the actual values of C and S…
WG4 experiment summary

26. WG4 experiment summary

27. Observation of B0→K0K0 and B+→K0K+
B0→KSKS and other b→d
Jed Biesiada
No signal B0→K+K−
Observation of B0→K0K0 and B+→K0K+
2.5
First measurement
WG4 experiment summary

28. B0→fK* polarization Kai-Feng Chen
BaBar 89M, PRL 91, (2003): Fit fL only, find ~ 0.5 !
Belle 86M, PRL 91, (2003): angular fit in transversity basis
WG4 experiment summary

29. B0→rK* and other VV polarization
Georges Vasseur
WG4 experiment summary

30. B0→VV and baryon
George W.S. Hou
WG4 experiment summary

31. VV polarization
WG4 experiment summary

32. Summary Much progress in charmless B decays f2 (a)
isospin (pp, rr) + Dalitz plot (rp) time-dependent analyses
new a1p tCPV analysis
f1eff (beff)
sin(2f1eff) values smaller than sin(2f1)
New analysis in B→KKK0 using Dalitz plot by BaBar
f3 (g)
B→hh, B→Khh
other modes
tCPV in b→d, B→VV
Many fruitful results from both B-factories and Hadron experiments.
WG4 experiment summary